Tomi Valkeinen <tomi.valkei...@ti.com> writes: > Hi Kevin, > > I was fixing DSS context loss handling which is a bit broken, and while > testing on OMAP3 Overo, with -rc7 and omap2plus_defconfig, I noticed > that get_context_loss_count() seems to always return 0. > > 0 should be returned when an error happens, and as far as I see in > pwrdm_get_context_loss_count(), no error is happening but the DSS > context has just never been lost and the returned count is thus 0. > > Is this correct? And what happens when the count wraps and goes back to > zero, does the function return 0 in that case?
Hmm, you're right. zero is actually documented as the error return value (even though it's not really checked.) Since driver's should only every care about the *difference* in value between two calls to context_loss_count(), this might not be a big deal, but a proper fix is probably to have the state counters start at one. Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
